Passing back a Map with a key fo type Date in RPC?

[stonebranch1]

I am making a RPC call and included in the response is a HashMap that has Date objects as keys. All the data is being stripped out and in the smartgwt.log I see these messages:

<b>Ignoring unconvertible Map key of type: java.util.Date</b>

Is there any reason I am not allowed to set over a Map with the keys being a Date object?

[Isomorphic]

JavaScript Object keys are always Strings, and just calling toString() on your Date is probably not the result you want, so we warn instead.

[stonebranch1]

OK, thanks. I just wanted to confirm that.

I am just formatting the date as String and then creating a Date object on the client as needed from that String using the same formatting.

Thanks.